\begin{table}[!htb]
\begin{center}
\begin{tabular}{ |l l l l l| }
\hline  

ant	&	findbugs	&	jboss	&	jtopen	&	quilt	\\
antlr	&	fitjava	&	jchempaint	&	jung	&	roller	\\
aoi	&	fitlibraryforfitnesse	&	jedit	&	junit	&	rssowl	\\
argouml	&	freecol	&	jena	&	log4j	&	sablecc	\\
aspectj	&	freecs	&	jext	&	lucene	&	sandmark	\\
axion	&	galleon	&	jfreechart	&	marauroa	&	springframework	\\
azureus	&	ganttproject	&	jgraph	&	maven	&	squirrel\_sql	\\
c\_jdbc	&	gt2	&	jgraphpad	&	megamek	&	struts	\\
castor	&	heritrix	&	jgrapht	&	mvnforum	&	sunflow	\\
cayenne	&	hibernate	&	jgroups	&	myfaces\_core	&	tapestry	\\
checkstyle	&	hsqldb	&	jhotdraw	&	nakedobjects	&	tomcat	\\
cobertura	&	htmlunit	&	jmeter	&	nekohtml	&	trove	\\
colt	&	informa	&	jmoney	&	netbeans	&	velocity	\\
columba	&	ireport	&	joggplayer	&	openjms	&	webmail	\\
compiere	&	itext	&	jparse	&	oscache	&	weka	\\
derby	&	ivatagroupware	&	jpf	&	picocontainer	&	xalan	\\
displaytag	&	jFin\_DateMath	&	jrat	&	pmd	&	xerces	\\
drawswf	&	jag	&	jre	&	poi	&	xmojo	\\
drjava	&	james	&	jrefactory	&	pooka	&		\\
eclipse\_SDK	&	jasml	&	jruby	&	proguard	&		\\
emma	&	jasperreports	&	jsXe	&	quartz	&		\\
exoportal	&	javacc	&	jspwiki	&	quickserver	&		\\

\hline
\end{tabular}
\end{center}
\caption{Qualitas corpus systems}
\label{table:qualitas}
\end{table}